Blar i Department of Earth Science på tittel
Viser treff 340-359 av 1103
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Geochemistry and geochronology of hydrothermally enriched sediments associated with three vent fields along the Mohns Ridge
(Master thesis, 2024-06-03)Hydrothermally enriched sediments are linked to hydrothermal systems on the seafloor, and thus, studies utilizing sediment cores represent a narrative method to investigate hydrothermal activity. Plume particles from active ... -
Geochemistry of hydrothermal fluids from the E2-segment of the East Scotia Ridge: Magmatic input, reaction zone processes, fluid mixing regimes and bioenergetic landscapes
(Journal article; Peer reviewed, 2022)The compositions of hydrothermal fluids in back-arc basins (BABs) can be affected by the influx of magmatic fluids into systems that are dominated by reactions between basement rocks and seawater-derived fluids. The East ... -
Geochemistry of lava samples collected near the oceanic detachments at 13°N along the Mid-Atlantic Ridge
(Master thesis, 2017-09-25)The structure and composition of the oceanic lithosphere is mainly controled by the supply of magmatic melts to the ridge axis. At slow-spreading, mid-oceanic ridges are characterized by complex spreading styles, where ... -
A geochronological review of magmatism along the external margin of Columbia and in the Grenville-age orogens forming the core of Rodinia
(Journal article; Peer reviewed, 2022)A total of 4344 magmatic U-Pb ages in the range 2300 to 800 Ma have been compiled from the Great Proterozoic Accretionary Orogen along the margin of the Columbia / Nuna supercontinent and from the subsequent Grenvillian ... -
Geochronology and tectonic setting of voluminous granitoids and related rocks and associated extensional structures in Dronning Maud Land (East Antarctica)
(Master thesis, 2011-06-15)The history of the tectonic evolution in central Dronning Maud Land (cDML), East Antarctica can be inferred from various zircon grains for U-Pb zircon age determination with the Laser-Ablation Inductively-Coupled-Plasma ... -
Geofaglig vurdering av konsekvenser ved klimaframskrivinger for verdensarvområdet Vestnorsk fjordlandskap, delområde Geirangerfjorden
(Master thesis, 2022-06-01)I Møre og Romsdal er det forventet en økning i temperatur og nedbør frem mot perioden 2071-2100. Dette inkluderer en økning i årlig middeltemperatur på ca. 3,5-4,0 ºC og en økning i årsnedbør på 15%. Økningen vil føre til ... -
Geofysiske og sedimentologiske undersøkelser av israndavsetningene fremfor Esmarkmorenen, Rogaland
(Master thesis, 2016-09-01)Det første geologiske arbeidet som ble gjort i Forsand ble gjort av Jens Esmark på 1800- tallet, da han beskrev det vi i dag kaller Esmarkmorenen/Vassryggen og sletteområdet foran. Han konkluderte med at dette var ... -
Geologic controls on fluid flow and seismic imaging of faults in carbonate rocks : Insights from quantitative outcrop analysis and reflection seismic modeling
(Doctoral thesis, 2023-06-16)Utforsking av undergrunnen har historisk sett hovudsakleg vore drive av økonomiske insentiv gjennom leiting etter hydrokarbon og andre geologiske ressursar. I nyare tid, derimot, har geologiens rolle i det grøne skiftet ... -
Geological constraints on hydrocarbon contacts in the greater Norne area
(Master thesis, 2018-06-13)The understanding of the geological constraints on the position of fluid contacts is important for the evaluation of the remaining resources on the Norwegian Continental Shelf. Different mechanisms can lead to filled, ... -
Geological contraints on the position of hydrocarbon-contacts in the Gina Krog and Sleipner East areas
(Master thesis, 2018-08-22)Knowledge of the geological constrains on the position of hydrocarbon-water contacts are crucial in terms of hydrocarbon exploration. The controlling mechanisms have a large impact on the in-place volumes in a potential ... -
Geological control on dinosaurs’ rise to dominance: Late Triassic ecosystem stress by relative sea level change
(Journal article; Peer reviewed, 2020)The Late Triassic is enigmatic in terms of how terrestrial life evolved: it was the time when new groups arose, such as dinosaurs, lizards, crocodiles and mammals. Also, it witnessed a prolonged period of extinctions, ... -
Geological controls on fluid flow and seepage in western Svalbard fjords, Norway. An integrated marine acoustic study
(Doctoral thesis, 2015-11-06)The study of seabed fluid flow facilitates assessment of gas hydrate accumulation, submarine geohazards, localizing shallow and deep hydrocarbon reservoirs. Other fluid flow related studies include for example the benthic ... -
Geological evolution and stratigraphic relationships of the ophiolitic terrane in the outer Hardangerfjord area: evidence from geochronology and geochemistry
(Master thesis, 2017-10-13)Field relations, geochemistry and U-Pb single zircon ages have provided new information about the rocks of the outer Hardangerfjord area that represent a part of the Upper Ordovician ophiolitic terrane of south-western ... -
Geometric controls of tidewater glacier dynamics
(Journal article; Peer reviewed, 2022)Retreat of marine outlet glaciers often initiates depletion of inland ice through dynamic adjustments of the upstream glacier. The local topography of a fjord may promote or inhibit such retreat, and therefore fjord geometry ... -
Geometries of doleritic intrusions in central Spitsbergen, Svalbard: an integrated study of an onshore-offshore magmatic province with implications for CO2 sequestration
(Peer reviewed; Journal article, 2013)Igneous intrusions emplaced during the Early Cretaceous are well exposed in central Spitsbergen within the Permian–Jurassic sedimentary succession. The doleritic intrusions are collectively classified as the Diabasodden ... -
The geometry and evolution of deformation bands in volcaniclastic rocks: insights from Eastern Taiwan
(Master thesis, 2018-04-17)Deformation bands are millimeter to centimeter tabular zones formed by strain localization in porous, granular media, most commonly found in porous sandstones. They also occur in carbonates and volcaniclastics, but are ... -
The Geometry and Evolution of Supra-Salt Normal Fault Arrays
(Doctoral thesis, 2016-06-22)The structural style and evolution of normal fault arrays above mobile salt is less understood compared to those developed in rifts where strong variations in mechanical stratigraphy are absent. This research was performed ... -
Geomorfologiske og kvartærgeologiske studier i og omkring midtre Gudbrandsdal
(Master thesis, 1962) -
Geophysical investigation of the Hugin Fracture, a soft-sediment seafloor fracture on the Utsira High, North Sea. Implications for subsurface fluid migration
(Doctoral thesis, 2019)The 2011 discovery of the Hugin Fracture, a 3.5 km long seafloor fracture on the Utsira High, shows that large-scale, unexpected features can still be found in ostensibly wellmapped, highly industrialized offshore areas ... -
Gjennom grottekartlegging og kjemiske analyser studere lengdesnittet av Plurdalen og dannelsen av Pluragrotta
(Master thesis, 2015-05-31)Denne oppgaven har hatt som formål å studere lengdesnittet av Plurdalen i Rana. Metoden har vært tredelt i form av grottekartlegging, lokalisering av erosjonsbasis og utføring av kjemiske vannanalyser. Det ble kartlagt ...